Aid to urethrography and cystography.
D006801:Humans; D008297:Male; D010413:Penis; D014521:Urethra / Q000000981:diagnostic imaging*; D001743:Urinary Bladder / Q000000981:diagnostic imaging*; D014546:Urinary Catheterization / Q000295:instrumentation; D014567:Urography / Q000295:instrumentation*